 Watson states his conclusions'' as follows : "1. The rocks of the area here described have been greatly altered through pressure and chemical metamorphism, as indicated in the prevailing secondary schistose structure and the abundant development of the...  Bulletin of the Geological Society of America - Seite 362von Geological Society of America - 1902Vollansicht - Über dieses Buch
 | 1904 - 516 Seiten
...rocks of the area here described have been greatly altered through pressure and chemical metamorphim, as indicated in the prevailing secondary schistose...elastics. Furthermore, the popular name greenstone 1 Van Hise, CR: Correlation Papers, Bulletin No. 86, US Geol. Siirvry. ' Op. cit. • Op. cit. « Op.... | |
 | Geological Survey (U.S.) - 1911 - 188 Seiten
...much-altered state they are, according to present usage, more properly designated nieta-andesites ; that these are intimately associated with the corresponding...has equal application to the existing rocks of the Virgiliua district. 3. The rocks are pre-Cambrian in age and represent an area of ancient volcanics... | |
 | Sidney Paige - 1911 - 718 Seiten
...the rocks are shown to have been derived from an original andesite, but in their present much-altered state they are, according to present usage, more properly...meta-andesites; that these are intimately associated with the corres]H>iid'mg volcanic elastics. Furthermore, the popular inline "greenstone," applied to many areas... | |
 | North Carolina. Department of Conservation and Development - 1916 - 376 Seiten
...rocks of the area here described have been greatly altered through pressure and chemical metamorphism, as indicated in the prevailing secondary schistose...elastics. Furthermore, the popular name greenstone "Keith, Arthur: Geology of the Catoctin belt, 14th Ann. Kept. US Geol. Survey, Pt. 2, p. 309. °White,... | |
 | 1917 - 244 Seiten
...and minerals of the rock. "2. From structural, petrographic, and chemical evidences the rocks ar« shown to have been derived from an original andesite,...intimately associated with the corresponding volcanic clastics. Furthermore, the popular name greenstone •Keith, Arthur: Geology of the Catoctin belt,... | |
 | 1917 - 380 Seiten
...been derived from an original andesite, but in their present much altered state they are, aceording to present usage, more properly designated meta-andesites;...elastics. Furthermore, the popular name greenstone °Keith, Arthur: Geology of the Catoctin belt, 14th Ann. Kept. US Geol. Survey, Pt. 2, p. 309. 'White,... | |
 | Virginia. Division of Mineral Resources - 1925 - 762 Seiten
...rocks of the area here described have been greatly altered through pressure and chemical metaniorphism, as indicated in the prevailing secondary schistose...elastics. Furthermore, the popular name greenstone "Keith, Arthur: Geology of the Catoctin belt, Hth Ann. Kept. US Geol. Survey, Pt. 2, p. 309. 'White,... | |
 | Virginia Division of Mineral Resources - 1925 - 706 Seiten
...of the area here described have been greatly altered through pressure and chemical inetainorphisin, as indicated in the prevailing secondary schistose...elastics. Furthermore, the popular name greenstone •Keith, Arthur: Geology of the Catoctin belt, 14th Ann. Rept. US Geol. Survey, Pt. 2, p. 309. 'White,... | |
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